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http://indianaquariumhobbyist.com/community/ :: View topic - External CO2 Reactor
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External CO2 Reactor
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josyjames
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PostPosted: Thu Jun 21, 2012 8:16 pm Post subject: External CO2 Reactor Reply with quote

 Hi,
 
 Made  a  cheap  external  co2  reactor  using  pvc  pipe.  Posting  the  pics  of  what  I  have  done.  The  pvc  reactor  would  be  connected  to  the  outlet  of  the  canister  filter.  
 
 Actual  plan  was  to  glue  one  end  permanently  and  close  the  other  end  with  a  threaded  cap.  The  threaded  cap  would  enable  me  to  remove  the  bio  balls  for  cleaning.
 
 But  the  threaded  cap  available  in  the  shop  had  small  opening  through  which  the  bio  balls  could  not  be  taken  out.  So  glued  both  ends  permanently.
 
 Parts  used
 
 
 
 Plastic  hose  nipple  glued  to  the  end  cap
 
 
 
 End  product
 
 
 
 CO2  inlet  pipe  is  connected  at  the  side.  Would  post  the  pic  later.
 
 Comments  welcome.
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Nidhi
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PostPosted: Thu Jun 21, 2012 8:33 pm Post subject: Re: External CO2 Reactor Reply with quote

 Nice  and  simple  shelly..  Thumb Up  
 But  using  Bio  ball  was  not  the  only  solution,  you  could  have  used  the  threaded  cap  design  with  bathing  mesh  kind  of  sponge..
 but  present  design  has  no  issues  too..  so  ignore  me.   Smile
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Anish_a
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PostPosted: Thu Jun 21, 2012 8:51 pm Post subject: Re: External CO2 Reactor Reply with quote

 Hi  Shelly
 
 Have  u  tested  this?????How  effective  is  this??????????
 
 I  remember  seeing  a  similar  setup  with  another  hobbyist  .............unlike  urs  his  was  fairly  long  and  was  not  using  BIO  Balls  and  was  some  other  media  that  was  used.
 
 How  and  where  will  u  b  connecting  the  CO2??????will  that  be  leak  proof???
 
 Ao  u  see  the  pearling  in  plants  after  using  this  setup????
 
 B/W  great  DIY  as  usual
 
 Anish
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govindsj
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PostPosted: Thu Jun 21, 2012 10:09 pm Post subject: Re: External CO2 Reactor Reply with quote

 Hi!
      Nice  one.  Kindly  post  pics  after  you  have  connected  it  to  canister  outlet.  
 
 Govindsj
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cinciboy
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PostPosted: Fri Jun 22, 2012 9:19 am Post subject: Re: External CO2 Reactor Reply with quote

 Very  good  job  indeed.  please  post  the  complete  setup  once  it  is  done.  Thumb Up
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josyjames
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PostPosted: Sun Jun 24, 2012 12:33 am Post subject: Re: External CO2 Reactor Reply with quote

 @  Srinidhi,
 
 Seen  the  bio-balls  models  in  the  commercially  available  models.  So  used  them.
 
 @  Anish,
 
 Not  yet.  Would  do  that  tomorrow.  It  is  completely  leak  proof  since  both  the  sides  are  glued  together.  Had  tested  with  my  other  canister  with  water  in  a  bucket.  Would  take  the  pic  tomorrow  and  show  how  I  have  connected  the  CO2.
 
 @  Govind  &  Kumaran,
 
 Would  show  the  complete  setup  tomorrow.
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aquariumer
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PostPosted: Sun Jun 24, 2012 2:12 am Post subject: Re: External CO2 Reactor Reply with quote

 Shelly  nice  work  .
 I  have  used  branded  reactors  and  the  gas  flow  in  the  reactor  would  depend  on  you  water  flow,  and  water  flow  would  decrease  over  a  period  of  time(more  the  water  flow  higher  should  be  the  gas  pressure  and  visa  a  versa)  so  what  I  mean  is  there  would  constant  fluctuation  in  the  flow  of  canister  and  thus  fluctuation  in  gas  intake.
 my  point  is  a  transparent  reactor  is  essential  to  monitor  actual  flow  of  gas  in  the  reactor  chamber.  You  may  use  a  bubble  counter  but  it  is  a  deceiving   device  for  me.  you  may  use  a  co2  indicator  in  such  case.
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abhis9
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PostPosted: Tue Jul 03, 2012 3:17 pm Post subject: Re: External CO2 Reactor Reply with quote

 Is  it  copleted  Shelly  !!
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josyjames
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PostPosted: Tue Jul 03, 2012 3:34 pm Post subject: Re: External CO2 Reactor Reply with quote

                                                   
aquariumer  wrote  (View  Post):                
Shelly  nice  work  .
 I  have  used  branded  reactors  and  the  gas  flow  in  the  reactor  would  depend  on  you  water  flow,  and  water  flow  would  decrease  over  a  period  of  time(more  the  water  flow  higher  should  be  the  gas  pressure  and  visa  a  versa)  so  what  I  mean  is  there  would  constant  fluctuation  in  the  flow  of  canister  and  thus  fluctuation  in  gas  intake.
 my  point  is  a  transparent  reactor  is  essential  to  monitor  actual  flow  of  gas  in  the  reactor  chamber.  You  may  use  a  bubble  counter  but  it  is  a  deceiving  ┬ádevice  for  me.  you  may  use  a  co2  indicator  in  such  case.                

 
 Point  noted.  Would  try  to  create  a  transparent  reactor  to  take  look  into  the  water  flow.
 
 
                                                 
abhis9  wrote  (View  Post):                

 Is  it  copleted  Shelly  !!
                 

 
 Yes.  Very  much  and  now  functioning  very  well  in  my  tank.  Could  see  my  plants  pearling  more  than  before.  Would  try  to  post  the  pics  of  the  unit  connected  to  the  canister  today  evening.
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josyjames
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PostPosted: Tue Jul 03, 2012 11:49 pm Post subject: Re: External CO2 Reactor Reply with quote

 Here  are  the  photos  of  the  external  reactor  connected  to  the  canister  pipe.  I  have  cut  the  hose  before  the  spray  bar  and  connected  the  reactor.
 
 
 
 CO2  inlet  connected  to  the  bottom  of  the  reactor.
 
 
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Sujo
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PostPosted: Wed Jul 04, 2012 8:32 am Post subject: Re: External CO2 Reactor Reply with quote

 What  is  the  adhesive  used  for  gluing  them.
 Have  you  applied  M-Seal?
 I  wonder  how  you  make  it  leak  proof.
 
 Also...
 What  is  the  direction  of  water  flow  inside  the  reactor?
 Option  1  may  be  a  better  choice.
 What  I  want  to  say  is  that  keeping  the  reactor  upside  down  (CO2  inlet  at  top)  and  keeping  water  flow  from  top  to  bottom  may  make  this  more  efficient.
 
 
 Regards
 Sujo
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josyjames
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PostPosted: Wed Jul 04, 2012 10:56 am Post subject: Re: External CO2 Reactor Reply with quote

 @  Sujo,
 
 I  have  used  the  normal  pvc  glue.  If  glued  properly,  there  wont  be  any  leak.  The  same  pvc  glue  is  used  in  the  house  plumbing.  Then  why  are  you  worried  on  the  leaking  of  the  pvc  pipe.  If  you  are  just  worried  on  this  pvc  gluing,  then  how  do  you  trust  the  pvc  pipes  in  your  house  pluming!!!!  Chuckle  
 
 As  mentioned,  I  have  connected  to  the  outlet  of  the  canister.  Means  before  the  spray  bar.  All  the  external  reactors  are  connected  to  the  outlet  of  the  canister  filter.  This  would  make  sure  that  mlum/dirt  does  not  form  in  the  bio-balls.  If  you  are  using  in  the  inlet  of  the  canister,  the  co2  mixed  water  enters  the  canister  filter.
 
 Hence  the  external/internal  reactors  are  always  connected  to  the  outlet  of  the  canister  filter.
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Sujo
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PostPosted: Wed Jul 04, 2012 11:50 am Post subject: Re: External CO2 Reactor Reply with quote

 Hi  Shelly,
 
 I  am  yet  to  try  the  PVC  glue  on  PVC.
 Looks  like  it  is  the  perfect  thing  to  fix  this.
 
 My  idea  was  not  about  connecting  the  co2  reactor  at  the  inlet  of  canister.
 It  is  in  the  outlet  of  canister  only.
 The  change  I  suggest  is  to  keep  the  reactor  upside  down.
 So  the  co2  will  remain  more  time  in  the  reactor.
 May  be  this  picture  will  help  you  to  understand  what  I  am  thinking..
 The  red  color  is  the  reactor.
 The  black  ones  are  bioaballs  !!      :-)
 Please  note  that  the  co2  inlet  is  at  the  top  of  the  reactor.
 
 Let  me  know  your  comments  on  this.
 
 Thanks  for  giving  this  easy  way  to  make  the  reactor.
 I  am  also  thinking  about  making  one.
 I  think  this  is  much  better  and  cheaper  than  using  diffusors.
 
 Regards
 Sujo
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PostPosted: Wed Jul 04, 2012 12:03 pm Post subject: Re: External CO2 Reactor Reply with quote

 excellent  !!!  Smile
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PostPosted: Tue Jul 10, 2012 8:09 pm Post subject: Re: External CO2 Reactor Reply with quote

 I  don't  think  that  there  wont  be  any  much  difference  in  tilting  the  co2  reactor  upside  down.   Since  the  reactor  length  is  below  10",  I  don't  see  that  there  would  be  any  pressure  in  pushing  the  water  up/down  inside  the  reactor.  
 
 If  the  reactor  length  is  too  long  and  there  is  a  point  in  titling  the  reactor  so  that  the  co2  stays  long  inside  the  reactor.
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